Number of ways to reciprocally link elements of an 5Xn array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.

A220624

Number of ways to reciprocally link elements of an 5Xn array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.

Terms

    a(0) =1a(1) =228a(2) =4657a(3) =243119a(4) =8608738a(5) =356768525a(6) =13864972277a(7) =553125347136

External references